Gang I am a tech - work for small businesses. Big fan of all Piriform tools.
I see a problem I believe is due to CCleaner, current edition, Registry cleanup tool, on Windows 8.1 running on a Samsung NP365E5C with AMD chipset. After running the Registry cleaner and shutting down, on the next bootup got a handful of Windows Errors [Event log] and a black background instead of the Theme on the desktop [not using the Tiles Interface but Desktop]
If no one else is seeing this, then I am mistaken as to the source of the issues. Given that the system is just in pre-deployment, not using it much, it looked like simple "Cause/Effect" case.
Sounds like you cleaned every entry ccleaner suggested. This is very dangerous behavior as you have now discovered. You may need to refresh your windows.
Please read the advice in my signature below, and in the future follow it.